/
collectlogfiles.go
251 lines (231 loc) · 6.37 KB
/
collectlogfiles.go
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// Copyright 2023 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package collectlogfiles searches various directories and aggregates
// log files into a single .tar.gz package.
package collectlogfiles
import (
"archive/tar"
"compress/gzip"
"context"
"fmt"
"io"
"os"
"path/filepath"
spb "github.com/bazelbuild/reclient/api/stats"
"github.com/bazelbuild/reclient/internal/pkg/logger"
"github.com/bazelbuild/reclient/internal/pkg/pathtranslator"
"github.com/bazelbuild/remote-apis-sdks/go/pkg/client"
"github.com/bazelbuild/remote-apis-sdks/go/pkg/command"
"github.com/bazelbuild/remote-apis-sdks/go/pkg/filemetadata"
"github.com/bazelbuild/remote-apis-sdks/go/pkg/uploadinfo"
log "github.com/golang/glog"
)
var (
logFileGlobs = append([]string{"rbe_metrics.txt",
"rbe_metrics.pb",
"*.rpl",
"*.rrpl",
"reproxy_outerr.log",
"build.trace.gz",
}, glogGlobs(
"bootstrap",
"reproxy",
"rewrapper",
"scandeps_server",
"scandeps_server-subproc",
"metricsuploader")...,
)
)
func glogGlobs(binaries ...string) (globs []string) {
for _, binary := range binaries {
globs = append(globs,
// glog main symlinks
binary+".INFO",
binary+".WARNING",
binary+".ERROR",
// glog windows symlinks
binary+".exe.INFO",
binary+".exe.WARNING",
binary+".exe.ERROR",
// glog rotated log files
binary+".*.log.INFO.*",
binary+".*.log.WARNING.*",
binary+".*.log.ERROR.*",
)
}
return
}
// CreateLogsArchive creates a .tar.gz file containing all relevant log files
// relevant to an RBE build.
func CreateLogsArchive(fname string, logDirs []string, logPath string) (err error) {
var logFiles []string
for _, logDir := range logDirs {
logFiles = append(logFiles, collectLogFilesFromDir(logDir)...)
}
if logPath != "" {
_, fp, err := logger.ParseFilepath(logPath)
if err != nil {
return err
}
if _, err := os.Stat(fp); err == nil {
logFiles = append(logFiles, fp)
}
}
if len(logFiles) < 1 {
return fmt.Errorf("unable to find log files. Try again by specifying proxy_log_dir")
}
logsArchive, err := os.Create(fname)
if err != nil {
return err
}
defer func() {
cerr := logsArchive.Close()
if err == nil {
err = cerr
}
}()
zw := gzip.NewWriter(logsArchive)
defer func() {
cerr := zw.Close()
if err == nil {
err = cerr
}
}()
tw := tar.NewWriter(zw)
defer func() {
cerr := tw.Close()
if err == nil {
err = cerr
}
}()
for _, f := range logFiles {
if err := addFileToArchive(tw, f); err != nil {
return err
}
}
return nil
}
// UploadDirsToCas uploads a list of directories to CAS and returns a list of the root digests.
func UploadDirsToCas(grpcClient *client.Client, dirs []string, logPath string) ([]*spb.LogDirectory, error) {
fmc := filemetadata.NewSingleFlightCache()
var lds []*spb.LogDirectory
var allInputs []*uploadinfo.Entry
var needToUploadLogPath bool
var logPathBase string
var absLogPath string
if logPath != "" {
_, fp, err := logger.ParseFilepath(logPath)
if err != nil {
return nil, err
}
absLogPath, err = toAbsRealPath(fp)
if err != nil {
return nil, err
}
logPathBase = filepath.Base(absLogPath)
needToUploadLogPath = true
}
// Uploads the contents of all log directories provided by dirs.
for _, dir := range dirs {
files := pathtranslator.ListRelToExecRoot(dir, "", collectLogFilesFromDir(dir))
if needToUploadLogPath && filepath.Join(dir, logPathBase) == absLogPath {
files = append(files, logPathBase)
needToUploadLogPath = false
}
if err := appendRootDigests(dir, files, grpcClient, fmc, &lds, &allInputs); err != nil {
log.Errorf("Unable to generate merkle tree for %v: %v", filepath.Dir(dir), err)
}
}
// Uploads the contents of the directory provided by --log_path if it hasn't been uploaded already.
if needToUploadLogPath {
if err := appendRootDigests(filepath.Dir(absLogPath), []string{logPathBase}, grpcClient, fmc, &lds, &allInputs); err != nil {
log.Errorf("Unable to generate merkle tree for %v: %v", filepath.Dir(absLogPath), err)
}
}
_, _, err := grpcClient.UploadIfMissing(context.Background(), allInputs...)
if err != nil {
return nil, err
}
return lds, nil
}
func appendRootDigests(dir string, files []string, grpcClient *client.Client, fmc filemetadata.Cache, lds *[]*spb.LogDirectory, allInputs *[]*uploadinfo.Entry) error {
root, inputs, _, err := grpcClient.ComputeMerkleTree(
context.Background(), dir, "", "", &command.InputSpec{Inputs: files}, fmc)
if err != nil {
return err
}
*allInputs = append(*allInputs, inputs...)
*lds = append(*lds, &spb.LogDirectory{
Path: dir,
Digest: root.String(),
})
return nil
}
// DeduplicateDirs filters out duplicate entries from dirs
func DeduplicateDirs(dirs []string) ([]string, error) {
var out []string
seen := make(map[string]bool, len(dirs))
for _, logDir := range dirs {
absLogDir, err := toAbsRealPath(logDir)
if err != nil {
log.Errorf("Unable to resolve %v: %v", logDir, err)
continue
}
if seen[absLogDir] {
continue
}
seen[absLogDir] = true
out = append(out, absLogDir)
}
return out, nil
}
func toAbsRealPath(path string) (string, error) {
noSym, err := filepath.EvalSymlinks(path)
if err != nil {
return "", err
}
return filepath.Abs(noSym)
}
func collectLogFilesFromDir(logDir string) []string {
var logFiles []string
for _, glob := range logFileGlobs {
if files, err := filepath.Glob(filepath.Join(logDir, glob)); err == nil {
logFiles = append(logFiles, files...)
}
}
return logFiles
}
func addFileToArchive(tw *tar.Writer, path string) error {
of, err := os.Open(path)
if err != nil {
return err
}
defer of.Close()
stat, err := of.Stat()
if err != nil {
return err
}
fh := new(tar.Header)
fh.Name = path
fh.Size = stat.Size()
fh.Mode = int64(stat.Mode())
fh.ModTime = stat.ModTime()
if err := tw.WriteHeader(fh); err != nil {
return err
}
if _, err := io.Copy(tw, of); err != nil {
return err
}
return nil
}